The easiest way to invite your colleagues and collaborators to your team is by clicking on your profile and selecting Invite people to sciNote from a drop-down menu.
A new window appears, where you type in one or multiple emails of people you want to invite. To add an email press Enter on your keyboard, then check the box Invite users to my team and choose a team you want to invite them to. Finish the action by clicking the Invite user/s button and assign them a role.
For easier understanding see the GIF below.